Brönmark Christer, Malmqvist Björn
Department of Ecology, University of Lund, Ecology building, S-223 62, Lund, Sweden.
Oecologia. 1986 May;69(2):268-276. doi: 10.1007/BF00377633.
Predator-prey interactions between the predatory leech, Glossiphonia complanata, and its gastropod prey were investigated in laboratory experiments, including behavioural observations with the aid of time-lapse video technique. Six gastropod species were investigated, viz. Lymnaea peregra, Planorbis planorbis, Physa fontinalis, Ancylus fluviatilis, Bithynia tentaculata, and Theodoxus fluviatilis. The species studied exhibited anti-predator defences, which had their maximum efficiency at different stages of encounter with G. complanata. The activity of B. tentaculata decreased with increasing leech activity, but was relatively higher when food was present than when not. Handling times were dependent on the time elapsed since the previous meal was captured (intercatch interval), which in turn was related to the size of the previous prey. Handling time was also related to the size of both predator and prey. The capture efficiency was high for small prey and the leeches spent more time in patches with higher yield. They were, however, unable to discriminate between patches of different prey density.
在实验室实验中，对捕食性水蛭光润金线蛭及其腹足类猎物之间的捕食者 - 猎物相互作用进行了研究，包括借助延时视频技术进行行为观察。研究了六种腹足类物种，即静水椎实螺、扁卷螺、泉膀胱螺、河壳菜蛤、铜锈环棱螺和河豆螺。所研究的物种表现出反捕食防御，这些防御在与光润金线蛭相遇的不同阶段具有最大效率。铜锈环棱螺的活动随着水蛭活动的增加而降低，但在有食物时比没有食物时相对更高。处理时间取决于自上次捕获猎物以来经过的时间（捕获间隔），而捕获间隔又与先前猎物的大小有关。处理时间还与捕食者和猎物的大小有关。对小猎物的捕获效率很高，水蛭在产量较高的斑块中花费更多时间。然而，它们无法区分不同猎物密度的斑块。
